As one member nicely summed-up "For me, the tube preamp defines the emotional color of the sound and a great SS amp delivers that uncolored to my speakers".
I went from a Cambridge SS to a McIntosh MA12000 integrated amplifier and the tubes up front really took music to another level. It was more emotionally engaging. That almost changed when I sold the McIntosh and bought Accuphase separates. At first I was disappointed and lost the "magic" of the tubes. I hated myself for what I did. But then as my system broke-in the music came to life and I find that emotional connection I had with my McIntosh. Things improved even more when I added an Accuphase standalone DAC replacing the DAC card that slides into the preamplifier. Yes there are times I miss the tubes but my Accuphase class A amplifier with Accuphase's preamplifier and DAC deliver a richer and smoother presentation which I'm really enjoying. So matching components is fundamental to SQ.
I see you have LaScala speakers. I love my LaScala AL5. The tubes on the McIntosh helped tame the LaScala's exuberance. Likewise, my Accuphase A-48S Class-A amplifier smoothes this out and I'm getting a more refined sound.